/*********************************************************
   Copyright: (C) 2008-2010 by Steven Schveighoffer.
              All rights reserved

   License: Boost Software License version 1.0

   Permission is hereby granted, free of charge, to any person or organization
   obtaining a copy of the software and accompanying documentation covered by
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   execute, and transmit the Software, and to prepare derivative works of the
   Software, and to permit third-parties to whom the Software is furnished to
   do so, all subject to the following:

   The copyright notices in the Software and this entire statement, including
   the above license grant, this restriction and the following disclaimer, must
   be included in all copies of the Software, in whole or in part, and all
   derivative works of the Software, unless such copies or derivative works are
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   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
   SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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**********************************************************/
module dcollections.DefaultFunctions;

/**
 * Define the default compare
 */
int DefaultCompare(V)(ref const(V) v1, ref const(V) v2)
{
    return typeid(V).compare(&v1, &v2);
}

/**
 * Define the default less function
 */
bool DefaultLess(V)(ref V v1, ref V v2)
{
    // see if we can simply use D's operator overloading
    static if(is(typeof(v1 < v2) == bool))
        return v1 < v2;
    else
        // use runtime function
        return typeid(V).compare(&v1, &v2) < 0;
}

/**
 * Define the default hash function
 */
hash_t DefaultHash(V)(ref const(V) v)
{
    return typeid(V).getHash(&v);
}
